Why the Cowboys are changing their offense before facing the Patriots

The Patriots signed quarterback Will Grier off the Bengals’ practice squad three days before their win last weekend over the Jets. But they likely did so with this Sunday’s game in mind. Grier, who spent most of the past two seasons in Dallas, has his ex-Cowboy teammates and coaches on edge this week. Dallas offensive coordinator Brian Schottenheimer told reporters Tuesday his offense would change its signals and calls before hosting the Patriots on Sunday because he expects Grier to put his inside information to good use. “Will knows where...